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How Wolves changed the rivers

How Wolves changed the rivers

Tuesday 21st may 2019 

How do you think wolves transformed the rivers?

I’ll tell you now 

One of the most exciting scientific findings in the past half
century has been the discovery of widespread tropic
cascade a  tropic cascade is ecological
process starting from the top of the food chain
and tumbles down to the very bottom and a classic example
is what happened in Yellowstone national park in america
when wolves were reintroduced in 1995 we all know wolves
kill a veris species animals  but also give life to many others .

Before the wolves turned up they had been absent for

70 years wolves were reintroduced to Yellowstone national
park  in 1995. Since there were no predators to hunt the deer
there population grew larger and larger the deer simply they
grazed all the vegetation . as soon as the wolves arrived than
a remarkable thing happened ,yes they killed some of the 
deer then the deer started avoiding certain parts of the park
such as the canyons and gorges those areas regenerated the
height of trees quintupled in just 6 years. Bear valley sides
aspen,willow and cottonwood as soon as that happened, the
birds moved in the number of song birds migratory birds
started to increase greatly ,and the number of beavers started
to increase greatly because of the trees. Just like the
wolves beavers are ecosystem engineers and create leashes
for species and their dams make habitats for other  species
such as otters and muskrats ,ducks and fish.
the wolves killed the coyotes,as a result the number of rabbits
and mice increased.which meant more hawks more wesles
more foxes more badgers. Ravens, bald eagles
fed on the carien the wolves left bears fed on it to their
population started to rise to,partly also because there were
more bearys growing on the regenerating shrubs,and the
bears reinforced the impact of the wolves by
killing some of the calves of the deer. But here's where it gets
really interesting,the wolves changed the behavior of the
rivers they became meanderles there was less erosion the
chanels narrowed more pools formed more riffel
sections all of wich were good for wildlife habitats
but the rivers changed in response to the wolves. And the
reason was the regenerating forests stabilized the banks
so the rivers became more fixed in their corse . 
by driving the deer out of some places and the
vegetation recovering on the valley side there was les soil
erosion . wolves small in number changed
yellowstone national park .